タイトル(掲載誌)Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集
一般注記type:text
[ABSTRACT] A comparison was made between a land use map derived from remote sensing data and an existing land use map. A GIS (Geographic Information System) was implemented to evaluate the land use change of the Camiling district, Luzon island, the Philippines. Deforestation in the study area was monitored. Soil/Vegetation matrix method was used to create land use map from MOS-1/MESSR data. Satellite data taken during the dry season and the rainy season, respectively, in the study area were used to make the classification more accurate. Following procedures were taken for both satellite images taken during the dry season and during the rainy season in 1990, Pixels of the image were classified according to their VCR (Vegetation Coverage Ratio) and SDI (Soil Dryness Index) using a matrix. Classified images derived from two different seasons were then logically related to each other to generate the satellite-derived land use map. Land use information was extracted from an existing topographic map published in 1977. The information was then input to a GIS (Geographic Information System). Land use maps of two different times were logically overlaid onto each other to evaluated the land use change happened during the period. Clear decrease in forest area, namely deforestation was monitored. Forest area in the Camiling district was about 457 km^2 in 1977, whereas it was about 246 km^2 in 1990. It had shrunk by about 48 percent. Spatial analysis of this area showed that 45 percent of the ex-forest area turned into paddy field.
一次資料へのリンクURLhttps://opac.ll.chiba-u.jp/da/curator/900022438/C-24_39.pdf
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)